SMALL OPTICAL SYSTEM USING IN IMAGE TRANSMISSION APPARATUS

摘要

A small optical system for use in an image transmission apparatus is provided. The small optical system includes a base board, an image sensor, an optical refraction structure, a housing, and an infrared blocking unit. The image sensor is formed on the base board. The optical refraction structure is installed on the base board to cover the image sensor. In the optical refraction structure, a lens unit for focusing incident light on the image sensor, and a holder for the lens unit are integrated. The optical refraction structure partly contacts the area around the image sensing area of the image sensor. The housing contacts and seals the area on the base board around the optical refraction structure and covers the optical refraction structure excluding the lens unit. The infrared blocking unit is installed between the housing and the image sensor.